Lewis w



(No Model.)

L. W. HOLLOWAY.

DUST ARRESTEB..

No'. 336 Fay. Iz`

,238. Patented Feb. 16,1886.

Wl 72A v'1.1951115'.

N. PETERS, PhaurLnhognpher, washmglun, D. C,

UNITED STATES PATENT EEICE.

LEVIS XV. HOLLOVAY, OF INDIANAPOLIS, INDIANA.

DUST-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 336,238, dated February 16, 1886.

Application filed November 23, 1885. Serial No. 183,589. (No model.)

To all whom it may concern:

Beit known that I, Lnwis W. HoLLowAY, a resident of Indianapolis,Indiana,have made certain new and useful Improvementsin Dust- Arresters, a description of which is set forth in the following specification, reference being made to the accompanying drawings, in the several figures of which like letters indicate like parts.

My invention relates to improvements in the construction of devices by which the dust from shavingrooms in manufaetories is carried up through a flue above the roof and into the open air, and will be understood from the following` description and drawings.

Figure 1 represents a side view of my device; Fig. 2, a bottom view of the same; Fig. 3, a view looking down the flue from above, the hood being removed. Fig. 4is a vertical section through my device, showing the interior arrangement of the parts.

In detail, F is the shell or frame the sides of which have openings o, at the top, which are covered by inclined boards b, the other end of which rests against the upwardly-projecting portion of the flue f. This fine, as will be seen from Fig. 4, passes up through inside of the frame-work, and extends some distance above the root' thereof, and its top is covered by a hood, 71., beneath the inclined sides of which are formed draft-openings o. This Hue is preferably made of iron, so as to be incombustible, and is secured within the frame-work by means of cross pieces or stays, which are .seen on either side in cross-section in Fig. 4. On either side of this flue, and in the bottom thereof, between the sides of the fine and the sides of the frame, areleft recesses the tops 0f which vare formed of pieces of cloth @,whieh stop the movement of dust up into the frame-work, while at thesame time these pieces c, being formed of some elastic or flexible material-such as cloth-allow some little expansion to the pressure of the currents of air which pass up on either side ofthe flue. Across the bottom ofthe flue is fixed a steam-pipe, p, which is connected with the exhaust-pipe of an engine, and small openings or holes are made on the upper side of this pipe, so that jets of steam will be discharged through these openings into mthe open mouth of the flue. This steam does not interfere, but to some eX- tent aids in the draft, while at the same time it moistens the dust that passes up through the flue, making it heavy, so that it will be deposited on the slats or shutters s. These shutters are fixed upon rods r, the sides of the shutters being journaled in the sides of the flue so as to allow the shutters to be turned in the manner of blind-slats by means of the rods r.

The dotted lines in Fig. 4 indicate different positions the slats may be made to assume when yit is desired to dislodge the dust that has settled upon them. 1

The machine operates as follows: The shavings and dust are carried away from the planers by means of a fan forcing them by its blast through a pipe, which conducts them upward and deposits them into a room set apart for that purpose. Vhen forced into this room,the heavier portions of the shavings will fall by their own gravity to the floor, while the lighter portions and dust are carried on upward by the blast through a ventilator fixed in the roof having openings which permit the dust to be carried into the open air. This is the ordinary method of constructing these devices. The difliculty is that the dust thus carried out the ventilator is deposited over the roof of the building and accumulates in large quantities thereon, and, being intianimable when dry and heavy when wet, is unsafe and dangerous tothe roof. I prevent this accumulation on the roof by stopping it in the flue, and it is for this purpose that the slats s are arranged alternately on each side of the flue, as shown in Fig. 41.. The dust and fine particles of matter, instead of being carried out into the open air, are deposited upon the slats, and, being wetted by the steam from the pipe p, acquire specific gravity enough to fall and lodge upon the several slats. W' hen these slats, which are made of any suitable size or shape, and in any desired number, and arranged alternately within the flue, or the sides thereof, become loaded with dust, by moving the rods r the slats may be thrown up into a vertical position, swinging on their hinges, taking the position shown by the dotted lines in Fig. 4, and the dust and accumulation of matter will then fall off the slats and through the flue and into the room below. By this means very little, if any, of the dust or fine IOO particles of matter are carried out through the openingsA into the air or fall upon the roof. The openings in the sides of the frame F -directly under the eavesb provide means for the escape of. air or any small particles of matter which pass through the covers c into the inside of the frame.

If desired, instead of making the slats solid, any one or all of them may be made ofa iiexible brous material,and such a method ofeonstruction is shown in the top slat ofthe series of Fig. 4 and illustrated in detail in Fig. 3.

What I claim, and desire to secure by Letters Patent, is the following:

1. In a dustarrester, an outer frame having an interior iiue provided with a hood, and having openings on either side near the top, and oscillating slats secured in the sides for arresting and lodging the matter passing up through the due, with rods connected to such slats for moving the same so as to dislodge the matter deposited thereon, all combined substantiall y as described.

2. In a dust-arrester, the frame F, providedV 3.- In a dust-arrester, the frame F, the flue f, passing up through such frame and out beyond its root', and provided with a hood, and openings o in the sides of the Hue below-such hood, the slats s, adapted to oscillate upon bearings in the sides of the flue, the rods r, connected to such slats for rotating them. the steam-pipe p, secured across the bottom of the flue f, and connected .with the exhaust-pipe of the engine, al1 combined substantially as described.

4. A dust-arrester composed of a ue leading from the interior of the building to the open air above the roof, provided with a lseries of slats journaled in the sides of the flue, and arranged alternately the one above the other, as shown, connected with rods for moving the slats to dislodge the dust that collects thereon, in combination with a steam-pipe for injecting steam into the iine for wetting the dust so that it will be deposited upon such slats instead of being carried into the open air, all combined substantially as described.

In witness whereof I have set my hand this 20th day of November, 1885.

LEWIS W. HOLLOWAY.

Witnesses: v

C. P. J AcoBs, G. W. LUTZ. 

